@article{ZNSL_1988_174_a3,
     author = {A. N. Grigor'eva},
     title = {Testing planar pictures isomorphism within linear time},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {101--121},
     publisher = {mathdoc},
     volume = {174},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1988_174_a3/}
}